Material-perforating and eyeletsetting apparatus



Feb. 11, 1947. o. STENSON 2,415,769

MATERIAL-PERFORATING AND EYELET-SETTING APPARATUS Filed Nov. 25, 1944 2Sheets-Sfieet 1 F/a. I

EVMZ W ATTOR/VFV 2 Sheets-Sheet 2 Q. ISTENSON WIYZIIW Filed Nov. 25,1944 MATERIAL-PERFORATING AND EYELET-SETTING APPARATUS Patented Feb. 11,1947 nita MATERIAL-PERFGRATING AND EYELET- SETTKNG APPARATUS ()la-fStenson, Chicago, 111., assignor to Western Electric Company,Incorporated, New York, N. Y., a corporation of New York ApplicationNovember 23, 1944, Serial No. 564,867

2 *Claims.

This invention relates to article working apparatus and moreparticularly to a combined perforating and rivet setting apparatus.

An object of this invention is the provision of a simple and practicableapparatus combining means for efficiently performing perforating andrivet setting operations.

In accordance with the above object, wherein the features of thisinvention, in one embodiment thereof, are applied to an apparatus forattaching terminals by means of eyelets to long flat resistance cards tobe used in potentiometers, there is provided a single supporting frameon which are mounted vertically aligned or superposed perforating andrivet setting heads arranged below and above a common bed. Reciprocablymounted in the frame is a die cooperatin with a fixed card perforatingpunch mounted on the lower face of the common bed and an eyelet settingtool cooperating with a fixed die mounted on the upper face of thecommon bed. A common actuating means employing a spring-returned togglemechanism operatively connected to the reciprocable perforating die andrivet setting tool serves to operate the latter die and tool, which areused alternately first to perforate the card and then to set an eyeletpassing through the card perforation and a perforated terminal member toseal the terminal member to the card.

Other-objects and advantages of this invention will more fully appearfrom the following detailed description, taken in conjunction with theaccompanying drawings, in which Fig. 1 is an elevation, partly insection, of a perforating and rivet setting apparatus embodying thefeatures of the invention;

Fig. 2 is a front elevation of the apparatus as viewed from the left ofFig. 1;

Figs. 3 and 4 are enlarged fragmentary central vertical sections ofportions of Fig. 1 showing the rivet setting tool and die and theperforating punch and die, respectively, in their normal inoperativepositions; and

Figs. 5 and 6 are fragmentary vertical sections through the terminalmember, card and eyelet before and after the eyelet setting operation.

Referring to the drawings, iii indicates a vertical frame which may besuitably attached to a work bench or other support, indicatedfragmentarily at i l. Reciprocably mounted for vertical movement inupper and lower forwardly extending arms :2 and is (Fig. 2) of the frameis an eyelet setting tool l4 and a perforating die k for supporting afixed punch it, which cooperates with the perforating die 15 and a fixeddie 28, which cooperates with the eyelet setting tool 14. Th settingtoo-l M and die 28 are so formed that, upon a downward operativemovement of the tool M (Fig. 3), an eyelet 22 seated on the die 2%) andhaving its tubular portion extending through apertures in a flatresistance cardzii and a terminal member 2! will be set and clinched inthe manner shown in Fig. 6.

Recesses 25 and 26 are provided in the upper and lower frame arms l2 andi3, in which are pivoted at 29 and 30 levers 3i and 32, respectively.The lever 3! is suitably pivotally connected at one end at 33 to abifurcated upper end of the setting tool l4 and the lever 32 issimilarly connected at 3% to the die E5, the end of the lever beingentered in a slot 3'! in the die. At their opposite or right ends (Fig.1), the levers 3i and 32 are pivotally connected at Hand 39 to outerends of toggle links it and 4t, respectively, the inner ends thereofbeing pivotally connected at 3 5. Attached to the togglelink id is anL-shaped lever 55, to the lower end of which is fixed, as indicated at46, one end of a flexible link or cord M, the cord extending forward, asviewed in Fig. 2, or to the left, as Viewed in Fig. 1, and over a guideor pulley wheel 63 journalled on a bearing arm 49 integral withthefra'me it. From the pulley wheel 33, the cord ifl extends downwardlyand is connected to a suitable foot treadle (not shown). I

Slidably fitted in an aperture formed in the frame It is a hollowplunger 5i which is normally urged outwardly by a compression spring 52bearing at opposite ends against inner walls of the aperture andplunger. The outer end of the plunger 5! constantly engages overlappinginner end faces of the togglelinks ii! and t! and in central alignmentwith the pivotal connection M. In the normal position of the togglelinks it? and 5.! and the plunger M, as shown in broken outline in Fig.1, the levers 3! and szwill also assume the broken outline positionthereof, wherel in they bear against inclined stop faces 53 and of theframe ID to limit the operative movement of the lever and thereby therivet setting tool I4, as shown to the full line position of these partsin Fig. 1. To limit a similar movement of the lever 32 and thereby theperforating die i5, as shown in full line position in Fig. 1, anadjustable stop screw 89 is mounted. in the frame'arm l3.

Fulcrumed at its inner or right end (Fig. 1) in a notch 6| formed in theframe id is a stripper plate 62, which, at its outer or left end, isslotted at 65 to freely surround the perforating punch I9. A tensionspring 66 entered in an aperture in the frame arm I8 and attached at itsupper end, as indicated at 61, to the arm and, at its lower end, asindicated at B8, to the stripper plate, serves to normally maintain theplate in its normal position abutting the lower face of the frame arm18. Journalled in bearing plates 69 fixed to opposite faces of the framearm i8 and also in the arm is a rotatable shaft 12, which is notchedintermediate its ends to provide a fiat face 13, which normally bears inparallel relation against the upper face of the stripper plate. A handle74 attached to one end of the shaft 72 provides means for manuallyactuating the shaft in a counterclockwise direction (Fig. 1) to cam thestripper plate 62 about its fulcrum point El and thus stripping theperforated card 23 from the perforating punch 15.

In the use of the apparatus above described, the flat card 23, with aperforated terminal member 24 correctly located thereon and retained inposition by a suitable tool, which includes clamping jaws 15, shownfragmentarily (Figs. 1 and 4) is entered between the retractedperforating die I and the fixed punch 19, the perforation in theterminal member being aligned with and pressed upwardly to enter thepunch therein, as shown in Fig. 4. While the card 23 and terminal member24 are held in the position described, the foot treadle (not shown) isdepressed and, by means of the cord 41 and lever 45, the toggle die i 5is idly advanced upwardly. The release links 49 and M are actuated fromtheir normal broken outline positions to their operative full linepositions (Fig. 1), which serves to simultaneously rockthe levers 3i and32 to their full line positions, thus advancing the perforating die 15upwardly to cause,- in cooperation with the stationary punch IS, aperforation of the card 23. At the same time, the rivet setting tool I4is idly advanced downwardly. Upon release of the foot treadle, theoperative parts of the apparatus are returned in the manner previouslydescribed by the action of the spring-pressed plunger 5| and the springto their broken outline positions. Thereafter, the perforated card 23 isstripped from the punch i 9 in the manner described hereinhefore byrocking the hand lever 14 in a counterclockwise direction (Fig. 1).

Without releasing the clamping jaws '45, an eyelet 22 is then pressed byhand into the perforations in the card 23 and terminal member 24.

i and perforating die 5 to their normal positions and the attaching ofterminal members 24 to cards 23 is repeated in the manner abovedescribed by alternate use of the perforating die I5 and cooperatingpunch 19 and the rivet setting tool M and cooperating die 29.

What is claimed is:

1. In a perforating and rivet setting apparatus, a frame, a perforatingpunch and die set on said frame, a rivet setting tool and die coaxiallyaligned therewith on said frame, said perforating punch and rivetsetting die being fixedly supported on said frame between saidperforating die and rivet setting tool, said latter die and tool beingreciprocably mounted on said frame. levers operatively connected to saidperforating die and rivet setting tool, a toggle mechanism comprising apair of similar links interconnected at adjacent ends and operativelyconnected at their opposite ends to said levers, means for actuatingsaid toggle mechanism to simultaneously actuate said perforating die andrivet setting tool, and a spring pressed plunger mounted in said frameoperatively bearing against said adjacent ends of said links forreturning said toggle mechanism and thereby said perforating die andrivet setting tool to their normal positions.

2. In a perforating and rivet setting apparatus, a frame having an armextending laterally therefrom, said arm being provided on one surfacewith a fixed element of a punch and die means and on the oppositesurface with an aligned fixed element of a rivet setting means, a pairof oppositely moving aligned plungers mounted in said frame, one of saidplungers carrying the other element of said punch and die means and theother plunger carrying the other element of said rivet setting means,levers pivoted on said frame and operatively connected to said plungers,a toggle mechanism comprising a pair of similar links pivoted at theiropposite ends to said levers and at their other ends to each other, anactuator fixed to one of said links for operating said toggle mechanismto simultaneously actuate said plungers and thereby said elements ofsaid punch and die means and said rivet setting means, and a springpressed plunger mounted in said frame operatively bearing against saidpivotally connected other ends of said links for returning said togglemechanism and thereby said plungers to their normal positions.

OLAF STENSON.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,518,085 Hall Dec. 2, 19241,554,415 Cote Sept. 22, 1925 585,835 Steen, Jr. July 6, 1897 1,302,516Davey May 6, 1919 1,524,927 Hagen Feb. 3, 1925 1,130,121 Thrasher Mar.2, 1915 1,186,169 Burgess June 6, 1916 FOREIGN PATENTS Number CountryDate German Oct. 17, 1933

